A Drum Tower Standing in a Shrine
Tosa Jinja Koro (土佐神社鼓楼, the drum tower of Tosa Shrine), in the Ichinomiya district of Kochi City, was built in 1649 by Yamauchi Tadayoshi and designated an Important Cultural Property on 30 January 1934. It rises southeast of the worship hall, two storeys tall, under a hip-and-gable roof of split-cypress shingles.
One line in the national register repays attention. The Agency for Cultural Affairs files this building under the category of temple architecture, not shrine architecture, even though it has stood inside a Shinto precinct for close to four centuries. That classification preserves a fact the Meiji government tried to erase. Until the separation edict of 1868, Tosa Shrine formed a single religious complex with its administrative temple and with Zenrakuji, the thirtieth stop on the Shikoku pilgrimage, and the whole was worshipped under the name Tosa Takakamo Daimyojin. A drum tower belongs to that world.
Yamauchi Tadayoshi, second lord of the Tosa domain, gave the shrine its gate in 1631 and this tower eighteen years later, alongside subsidiary shrines and torii. Where Chosokabe Motochika had rebuilt the halls of worship, the Yamauchi added the framing structures that turned the precinct into the domain's principal site of prayer.
Polychrome Against Bare Wood
The lower storey is a hakamagoshi, a boarded skirt whose profile swells outward in a strong curve as it drops toward the ground. A doorway opens at its centre onto an interior stair. Above the skirt a railed veranda circles all four sides, carried on a bracketed base that uses mitesaki triple-stepped bracketing in the wayo manner, with frog-leg struts set between the brackets.
The upper storey measures three bays by two. Board doors hang in the central bay front and back; the flanking bays hold latticed windows, and the two side walls are boarded solid. Every column is round, and the triple-stepped bracketing above them pushes the eaves far out over a small ceiling and curved shirin panels. The eaves are double-rafted, and the gable carries a beam with a bulbous strut and a frog-leg strut at its centre. Colour covers the whole. Set beside the plain, unpainted timber of the worship hall in front, the tower reads as a piece of temple carpentry that stayed.
Kochi City's official description ends with an unusually candid judgement: the tower stands tall and its roof is large, which leaves the composition feeling slightly unstable. Reading that line, then looking up at the actual silhouette, is one of the more interesting exercises the precinct offers.
Finding It and Seeing It
The tower is easy to miss because visitors face forward, toward the sanctuary. Turn right after passing under the gate and it appears on the southeast side of the worship hall, close enough to photograph against the shingled roofs behind it. The drum itself hangs on the upper floor and once marked the hours; the interior is not open.
Viewing hours for the shrine buildings run from 8:30 a.m. to 4:30 p.m., with no admission charge. The precinct stays open through the year except during the Igomori rite, when the grounds close from 5 p.m. on 11 March until 7 a.m. on 13 March; 12 March is fully restricted. Ceremonies, weddings and private prayers may also limit access. Photography in the open precinct faces no blanket restriction, though the shrine office is the right place to check before shooting into any building or during a rite.
Kochi Station is about 30 minutes away by bus, alighting at Ichinomiya Jinja-mae and walking five minutes. Ichinomiya Station on the JR Dosan Line is 20 minutes on foot. By car, allow roughly 10 minutes from Kochi IC; parking is free, with room for 60 cars and five buses. Since Zenrakuji sits immediately next door, pilgrims working the Shikoku circuit can see both in a single stop, which is much the way the site was used before 1868.
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Q&A
- Why does a Shinto shrine like Tosa Jinja have a drum tower?
- Before the 1868 separation of Shinto and Buddhism, Tosa Shrine functioned as a combined complex with its administrative temple and with Zenrakuji. Drum towers belong to that Buddhist tradition, and the national register still classifies Tosa Jinja Koro under temple architecture.
- Who built Tosa Jinja Koro and when?
- Yamauchi Tadayoshi, second lord of the Tosa domain, had it built in Keian 2, corresponding to 1649. He was also responsible for the shrine's two-storey gate of 1631 and for subsidiary shrines and torii added in the same period.
- Can visitors go inside Tosa Jinja Koro?
- No. The tower is viewed from outside only. The precinct itself is open free of charge and the shrine buildings can be seen from 8:30 a.m. to 4:30 p.m., subject to closure during the Igomori rite in March and to restrictions during ceremonies.
- What is the hakamagoshi on Tosa Jinja Koro?
- Hakamagoshi is a boarded lower storey named for its resemblance to hakama trousers, flaring outward as it descends. On this tower it is built of vertical boards with a pronounced curve, pierced at the centre by a doorway leading to the stair.
- Where exactly is Tosa Jinja Koro within the precinct?
- It stands to the southeast of the worship hall, on the right-hand side after entering through the main gate. Its coloured brackets make it easy to distinguish from the unpainted timber of the halls of worship immediately in front of it.
Basic Information
| Name | Tosa Jinja Koro (土佐神社鼓楼) |
|---|---|
| Location | Ichinomiya, Kochi City, Kochi Prefecture (Ichinomiya Shinane 2-16-1) |
| Designation | Important Cultural Property (Structure), designation no. 00939 |
| Year Designated | 30 January 1934 (Showa 9) |
| Quantity | 1 building |
| Dimensions | Upper storey three bays by two, with hakamagoshi boarded base, irimoya roof, kokerabuki shingles; built in Keian 2 (1649) |
| Owner | Tosa Jinja |
| Public Access | Exterior viewing 8:30 a.m. to 4:30 p.m., free of charge; interior closed; grounds closed 11 to 13 March for the Igomori rite |
References
- Agency for Cultural Affairs, National Cultural Properties Database: Tosa Jinja Koro
- https://kunishitei.bunka.go.jp/heritage/detail/102/3416
- Cultural Heritage Online: Tosa Jinja Koro
- https://online.bunka.go.jp/heritages/detail/191253
- Kochi City, Civil Rights and Cultural Properties Division: Tosa Jinja Koro
- https://www.city.kochi.kochi.jp/soshiki/90/cas-state-1100300.html
- Kochi Prefectural Board of Education, Cultural Properties Division: Tosa Jinja Koro
- https://www.kochinet.ed.jp/bunkazai/details/110-1/110-1-03.htm
- Kochi Visitors and Convention Association, Kochi Tabi Net: Tosa Jinja
- https://kochi-tabi.jp/search_spot_sightseeing.html?id=891
Last verified: 2026.08.04